Patents by Inventor Roni J. Dornfeld

Roni J. Dornfeld has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Methods and systems for magnetic media servo writing
    Patent number: 8947802
    Abstract: A method comprises generating first and second magnetic field components in a magnetic medium, the second magnetic field component substantially opposite the first. A pattern is written onto the magnetic medium, and a signal is generated by reading the pattern. The magnitude of the second magnetic field component is controlled based on an asymmetry of the signal.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: February 3, 2015
    Assignee: Imation Corp.
    Inventors: Douglas W. Johnson, Roni J. Dornfeld, Stephen J. Rothermel
  • METHODS AND SYSTEMS FOR MAGNETIC MEDIA SERVO WRITING
    Publication number: 20140146412
    Abstract: A method comprises generating first and second magnetic field components in a magnetic medium, the second magnetic field component substantially opposite the first. A pattern is written onto the magnetic medium, and a signal is generated by reading the pattern. The magnitude of the second magnetic field component is controlled based on an asymmetry of the signal.
    Type: Application
    Filed: February 3, 2014
    Publication date: May 29, 2014
    Applicant: Imation Corp.
    Inventors: Douglas W. Johnson, Roni J. Dornfeld, Stephen J. Rothermel
  • Methods and systems for magnetic media servo writing
    Patent number: 8643968
    Abstract: A method comprises generating first and second magnetic field components in a magnetic medium, the second magnetic field component substantially opposite the first. A pattern is written onto the magnetic medium, and a signal is generated by reading the pattern. The magnitude of the second magnetic field component is controlled based on an asymmetry of the signal.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: February 4, 2014
    Assignee: Imation Corp.
    Inventors: Douglas W. Johnson, Roni J. Dornfeld, Stephen J. Rothermel
  • METHODS AND SYSTEMS FOR MAGNETIC MEDIA SERVO WRITING
    Publication number: 20130286501
    Abstract: A method comprises generating first and second magnetic field components in a magnetic medium, the second magnetic field component substantially opposite the first. A pattern is written onto the magnetic medium, and a signal is generated by reading the pattern. The magnitude of the second magnetic field component is controlled based on an asymmetry of the signal.
    Type: Application
    Filed: March 12, 2013
    Publication date: October 31, 2013
    Applicant: Imation Corp.
    Inventors: Douglas W. Johnson, Roni J. Dornfeld, Stephen J. Rothermel